21st Century Niacinamide 500 mg Prolonged Release 110 Count (Pack of 1)
Niacinamide is a good source of vitamin B-3 with a lower flushing effect than that of niacin. Niacinamide is a good source of vitamin B-3 without the flushing effect associated with niacin. 21st Century prides itself on providing you with a great product at the best value.
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